Option 1
Leg power. Build sheltered walkways for pedestrians and covered bicycle tracks. Short distances can now be reached without cars, taxis and buses. Environment friendly and good exercise too.

Option 2
Of course an underground subway or overhead mass people mover would be nice.

Option 3
Designate sheltered carpool pickup and drop off points with proper railings for orderly queues. Set affordable rates to avoid prices going up too much and then it becomes undesireable as an option. However Karwa may not like this idea as it kills their business.

Option 4
Often you see only the driver in a big car. Smaller cars like the cute SWATCH smart car may cause less traffic jam.